Also: * Human brains don't stop developing until mid twenties. Brains of teenagers are still not fully developed in all kinds of ways particularly around empathy. * Human brains are not wired for math. We learn to perform math "tricks" and mostly memorize algorithmic patters to find answers. She is being asked a question, that to her brain, is a completely new pattern and she doesn't have enough reference points to deconstruct the pattern and reconstruct it into an answer. I took a few online iq and personality tests that are considered scientifically valid to some degree. They had portions of tests dedicated to math and to visual pattern recognition. The first time I took the test I skipped over those questions because my brain just finds that shit boring and I don't like staring at completely new problems that are 100% unrelated to the verbal questions in the rest of the test. Then, when taking a version of the test for the third time to compare whether or not my anwers drift between tests, I checked on problem out and noticed that it was just easy pattern matching on both the math and visual pattern tests. Once I decompiled the initial pattern I could figure out basically all of the math and pattern questions. There was one pattern recognition question set I was not able to crack as it seemed to have multiple interacting levels of pattern correlation, but maybe with more time and practice in similar tests I would be able to in the future. I am no longer convinced that math is exclusively the domain of smart people. You do occasionaly see people born with a natural pattern recognition talent that is a good fit for math like Srinivasa Ramanujan, but, good deal of math is not exactly what it seems to us colloquilly, as a kind of magic that only smart people get and if you can't do math you aren't in that magic club.